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Finding the Fourth Proportional to 117,672.63, 176,500.85 and 67,715.88

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Solution

The fourth proportional to 117,672.63, 176,500.85 and 67,715.88 is: 101,569.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,672.63 : 176,500.85 = 67,715.88 : x
  2. Step 2: Convert to fraction form
    117,672.63/176,500.85 = 67,715.88/x
  3. Step 3: Cross multiply
    117,672.63x = 176,500.85 × 67,715.88
  4. Step 4: Simplify right side
    117,672.63x = 11,951,910,039.92
  5. Step 5: Solve for x
    x = 11,951,910,039.92/117,672.63
  6. Step 6: Final answer
    x = 101,569.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.